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Finding the Fourth Proportional to 159,820.20, 239,730.30 and 100,722.60

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Solution

The fourth proportional to 159,820.20, 239,730.30 and 100,722.60 is: 151,083.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,820.20 : 239,730.30 = 100,722.60 : x
  2. Step 2: Convert to fraction form
    159,820.20/239,730.30 = 100,722.60/x
  3. Step 3: Cross multiply
    159,820.20x = 239,730.30 × 100,722.60
  4. Step 4: Simplify right side
    159,820.20x = 24,146,259,114.78
  5. Step 5: Solve for x
    x = 24,146,259,114.78/159,820.20
  6. Step 6: Final answer
    x = 151,083.90

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.